I'm having trouble writing my viewfactor file when using the s2s radiation model when modeling solar load. I know you can create the viewfactor file using parallel processors but outside of Fluent. The Fluent help say: write utility viewfac -p -t n -cnf=host1,host2,... n inputfile, but this does not work for me. I'm using a HPUX 64-bit and really just need to know how to execute the viewfac_p.2.1.6 file in the utility folder.